Book Image

OpenShift Multi-Cluster Management Handbook

By : Giovanni Fontana, Rafael Pecora
5 (1)
Book Image

OpenShift Multi-Cluster Management Handbook

5 (1)
By: Giovanni Fontana, Rafael Pecora

Overview of this book

For IT professionals working with Red Hat OpenShift Container Platform, the key to maximizing efficiency is understanding the powerful and resilient options to maintain the software development platform with minimal effort. OpenShift Multi-Cluster Management Handbook is a deep dive into the technology, containing knowledge essential for anyone who wants to work with OpenShift. This book starts by covering the architectural concepts and definitions necessary for deploying OpenShift clusters. It then takes you through designing Red Hat OpenShift for hybrid and multi-cloud infrastructure, showing you different approaches for multiple environments (from on-premises to cloud providers). As you advance, you’ll learn container security strategies to protect pipelines, data, and infrastructure on each layer. You’ll also discover tips for critical decision making once you understand the importance of designing a comprehensive project considering all aspects of an architecture that will allow the solution to scale as your application requires. By the end of this OpenShift book, you’ll know how to design a comprehensive Red Hat OpenShift cluster architecture, deploy it, and effectively manage your enterprise-grade clusters and other critical components using tools in OpenShift Plus.
Table of Contents (23 chapters)
1
Part 1 – Design Architectures for Red Hat OpenShift
6
Part 2 – Leverage Enterprise Products with Red Hat OpenShift
11
Part 3 – Multi-Cluster CI/CD on OpenShift Using GitOps
15
Part 4 – A Taste of Multi-Cluster Implementation and Security Compliance
19
Part 5 – Continuous Learning

Application delivery model

At this point, you may be wondering how OpenShift Pipelines (Tekton) and GitOps (Argo CD) are related. Tekton and Argo CD are complementary tools that are perfect together. While Tekton is a perfect fit for CI pipelines that run unit tests and build and generate container images, Argo CD is more appropriate for continuous delivery practice. The following diagram summarizes what a CI/CD pipeline with Tekton and Argo CD looks like:

Figure 10.2 – Application delivery model using Tekton and Argo CD

CD with GitOps means that the actual state of the application should be monitored and that any changes need to be reverted to the application’s desired state, as described in the Git repository:

Figure 10.3 – Continuous delivery with GitOps

In this chapter, we will use our example from the previous chapter and use Argo CD to deploy the application and practice this application delivery model.

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